Microneurovascular muscle flaps can be effectively employed to reanimate the paralyzed mid-face. This chapter explores the indications and contraindications for free muscle flap smile restoration. Various sources of innervation are examined including the motor nerve to masseter and cross-face nerve grafts, as are different muscle flap donor sites. A detailed description of facial nerve exploration, sural nerve graft harvest, and the cross-face nerve graft procedure are provided. Single and two-staged facial reanimation procedures utilizing free gracilis muscle flaps are also described in detail, including technical nuances, postoperative care, and physical therapy. The technique is well suited for individuals whose native muscles of facial expression have failed to develop in utero, undergone irreversible atrophy, sustained significant trauma, or have been sacrificed during oncologic resection.
An Endoscopic Approach to Longitudinal Structures Including Muscle Flaps and Vein, Tendon, and Nerve Grafts